Footwear sole



FIG. 1 is a perspective view of a footwear sole embodying the new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines shown in FIGS. 3-7 depict unclaimed environmental structure with the exception of the broken lines immediately adjacent to the perimeter of the claimed footwear sole depicted in solid lines. These perimeter broken lines depict a boundary that also forms no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 